<template>
  <div>
    <el-container class="home-container">
        <!-- 头部区 -->
  <el-header>
      <div>
          <img src="../assets/logo.png" alt="">
          <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout()">退出</el-button>
  </el-header>
  <!-- 页面主体区 -->
  <el-container>
      <!-- 侧边栏 -->
    <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse()">|||</div>
        <el-menu
      background-color="#333744"
      text-color="#fff"
      active-text-color="#409EFF"
      unique-opened
      :collapse ="isCollapse"
      :collapse-transition='false'
      :router="true"
      :default-active='activePath'
      >
      <!-- 一级菜单 -->
      <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单的模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key='subItem.id'
        @click="saveNavstate('/'+subItem.path)"
        >
             <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
        </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <!-- 右侧内容主题 -->
    <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
  </div>
</template>
<script>
export default {
  data () {
    return {
      menulist: [],
      iconsObj: {
        125: 'el-icon-user-solid',
        103: 'el-icon-s-tools',
        101: 'el-icon-goods',
        102: 'el-icon-s-claim',
        145: 'el-icon-coin'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    //   console.log(this.menulist)
    //   for(let i=0;i<menulist.length;i++){
    //       console.log(menulist[i]);
    //   }
    },
    // 点击按钮切换菜单的折叠和展开
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavstate (activePath) {
      // 保存链接的激活状态
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style  scoped>
     .home-container{
        height: 800px;
    }
    .el-header{
        background-color: #373d41;
        display: flex;
        justify-content: space-between;
        padding: 0;
        align-items: center;
        color: #fff;
        font-size: 20px;
    }
     .el-header>div{
         display: flex;
         align-items: center;
         height: 100%;
         border-radius: 3px;
         padding: 3px;
         /* border: 1px solid #fff; */
     }
     .el-header>div>img{
         width: 50px;
         height: 50px;
         margin-right: 15px;
     }
    .el-aside{
        background-color: #333744;
    }
    .el-aside>.el-menu{
        border-right: 0;
    }
    .el-main{
        background-color: #eee
    }
    .toggle-button{
        background-color:#4A5064 ;
        font-size: 10px;
        text-align: center;
        color: #fff;
        text-align: center;
        /* 文字间距 */
        letter-spacing: 0.2em;
        /* 鼠标放上去变成小手 */
        cursor: pointer;
    }

    /* .el-button{
        position: absolute;
        right: 10px;
    } */
</style>
